"reflectancy" meaning in English

{
  "forms": [
    {
      "form": "reflectancies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "reflectancy (countable and uncountable, plural reflectancies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "reflectance"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2007 December 14, Robert Pasnau, “The event of color”, in Philosophical Studies, volume 142, number 3, →DOI",
          "text": "That is, when a colored surface is illuminated by light, an event takes place on the surface, and that event is characterized by a certain SSR. Since SSRs are defined in terms of percentages of reflectancy, the property holds constant over variations in illumination, so long as there is enough light of the right sort to produce a light-emitting event.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of reflectance"
      ],
      "id": "en-reflectancy-en-noun-A7D6TPEl",
      "links": [
        [
          "reflectance",
          "reflectance#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "reflectancy"
}

{
  "forms": [
    {
      "form": "reflectancies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "reflectancy (countable and uncountable, plural reflectancies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "reflectance"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "ref": "2007 December 14, Robert Pasnau, “The event of color”, in Philosophical Studies, volume 142, number 3, →DOI",
          "text": "That is, when a colored surface is illuminated by light, an event takes place on the surface, and that event is characterized by a certain SSR. Since SSRs are defined in terms of percentages of reflectancy, the property holds constant over variations in illumination, so long as there is enough light of the right sort to produce a light-emitting event.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of reflectance"
      ],
      "links": [
        [
          "reflectance",
          "reflectance#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "reflectancy"
}